JP2004261413A

JP2004261413A - Sewing machine

Info

Publication number: JP2004261413A
Application number: JP2003055160A
Authority: JP
Inventors: Masashi Kato; 雅士加藤; Taiichi Noguchi; 泰一野口; Yasuhiko Kawaguchi; 保彦川口; Hiroshi Yamazaki; 浩史山崎
Original assignee: Brother Industries Ltd
Current assignee: Brother Industries Ltd
Priority date: 2003-03-03
Filing date: 2003-03-03
Publication date: 2004-09-24
Anticipated expiration: 2023-03-03
Also published as: JP3729412B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sewing machine capable of mounting a plurality of bobbins, which allows an easy understanding of correspondence of each bobbin with each tension regulating device. <P>SOLUTION: The multi-needle sewing machine M includes a spool holder 8 capable of mounting six bobbins 11a-11f and a tension regulating part 9 having tension regulating devices 81a-81f. The spool holder 8 has bobbin stands 17 and 18 for mounting six bobbins 11a-11f. The bobbin stands 17 and 18 are arranged so as to open in a letter V-shape toward the rear of the multi-needle sewing machine M in a plan view when it is in a use position. The six tension regulating devices 81a-81f are arranged in a letter V shape in the same arrangement as the bobbin stands 17 and 18 so as to open toward the rear. Thereby correspondence of each of the bobbins 11a-11f and each of the tension regulating devices 81a-81f can be grasped easily. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】本発明はミシンに関し、特に複数の糸駒を装着可能な糸駒台と複数の糸調子器を備えたミシンに関するものである。
【０００２】
【従来の技術】従来、複数種の糸で縫製する際に用いられる多針式ミシンは、一般に、縫針を複数有する針棒ケースを備え、その針棒ケースを左右方向に移動させて１つの縫針を選択し、その縫針により刺繍模様を縫製する。複数の縫針には、夫々色や太さが異なる上糸が供給され、その上糸を供給する複数の糸駒は糸駒台等に載置され、糸案内や糸調子器及び天秤などを経由して縫針の目孔に上糸が通される。
【０００３】
例えば、特許文献１には、固定台枠に回動可能に枢支された可動枠に固定された横板と、その横板の中央部に横板に対して直交するように固定された支持板を有する糸立て台が開示されている。これら十字形状に固定された支持板と横板には夫々２個ずつ、計４個の糸駒が装着され、それら４個の糸駒から供給される４本の上糸は、可動枠の上端部に設けられた前記十字形状に対応する十字形状の糸導板の糸導孔に案内されて縫針に供給される。
【０００４】
特許文献２には、６個若しくは５個の糸駒を載置可能な複数の細長い糸載置部材を備えたマルチミシンの糸立装置が開示されている。これら各糸駒から供給される上糸は、各糸駒を支持する糸立軸の挿通孔に通され、糸載置部材の長さ方向に沿って延びて、縫針に供給される。
【０００５】
【特許文献１】実公昭５５−３０９２０号公報（全頁，全図）
【特許文献２】実開昭５９−７０６８１号公報（３頁〜６頁、第１図，第２図）
【０００６】
【発明が解決しようとする課題】一般的なミシンでは、上糸は糸調子器に掛けられるが、特許文献１のミシンにおいて、糸駒と糸調子器の対応をわかりやすくするため、糸立て台に対応するように糸調子器を十字形状に配設すると、十字形状の２辺のうち、上糸が延びる方向と平行な１辺上に配設された２個の糸調子器に掛けられる２本の上糸は、互いに絡み合い、糸切れなどの問題が生じる。糸絡みを防ぐために、例えば、糸調子器を糸が延びる方向とは直交するように横方向に配設すると、各糸駒と各糸調子器との対応が判りづらく、作業者が糸調子器に糸を掛ける際に戸惑うといった問題が生じ、また、糸調子器を横方向に配設することでミシンの横幅が大きくなるといった問題も生じる。
【０００７】
特許文献２のマルチミシンにおいては、糸が延びる方向と糸駒が配列されている方向が平行なため、糸駒から延びる上糸同士は絡み易く、糸切れを起こし易い。上糸同士の糸絡みを防ぐため、上糸が延びる方向とほぼ直交するように糸調子器を配設すると、各糸駒と各糸調子器との対応が判りづらく、また、ミシンの横幅が大きくなるといった問題が生じる。
【０００８】
本発明の目的は、複数の糸駒を装着可能なミシンにおいて、各糸駒と各糸調子器の対応が容易に理解できるミシンを提供することにある。
【０００９】
【課題を解決するための手段】請求項１に記載のミシンは、複数の糸駒を装着可能な糸立装置と、複数の糸調子器を備えたミシンにおいて、前記糸立装置は、複数の糸駒が装着される糸駒台を有し、前記糸駒台は、平面視にてミシンの前方若しくは後方に向かって開くＶ字形に配置され、前記複数の糸調子器は、糸駒台の配置と同じ方向に向かって開くＶ字形に配置されているものである。
【００１０】
このミシンによれば、作業者は、Ｖ字形に配置された糸駒台に装着された夫々の糸駒から上糸を引き出し、糸駒台と同じ方向に向かって開くＶ字形に配置された複数の糸調子器に上糸を掛け、縫針の目孔に上糸を通し、縫針に上糸を供給する。
【００１１】
請求項２に記載のミシンは、請求項１に記載のミシンにおいて、前記糸立装置は、支持台と、１対の糸駒台と、１対の糸駒台を支持台に連結可能なリンク機構と、１対の糸駒台の一端付近部を支持台に水平面内で回動可能に連結する枢支軸を備え、前記１対の糸駒台を平面視にてＶ字形に開いた使用位置と、この使用位置から閉じてほぼ平行に並べた収納位置に切り替え可能に構成したものである。このミシンによれば、複数の糸駒を装着可能な１対の糸駒台を、水平面上で枢支軸の周りに回動させて、平面視にてＶ字形に開いた使用位置と、この使用位置から閉じてほぼ平行に並べた収納位置とに切替える。
【００１２】
請求項３に記載のミシンは、請求項２のミシンにおいて、前記１対の糸駒台の上方に位置する１対の糸案内バーであって、１対の糸駒台の位置切替えに対応するように位置切替え可能な１対の糸案内バーと、これら糸案内バーの一端部が回動可能に連結された上下に伸縮可能な脚柱部材とを有する糸案内機構を設けたものである。このミシンによれば、作業者は、糸駒から引き出した上糸をＶ字形の使用位置に位置する糸駒台に対応したＶ字形で糸駒台の上方に位置する１対の糸案内バーに掛けた後、糸調子器に上糸を掛ける。
【００１３】
請求項４に記載のミシンは、請求項２又は３に記載のミシンにおいて、前記１対の糸駒台が使用位置のときのＶ字形は、ミシン後方に向かって開くＶ字形である。このミシンによれば、収納位置に位置する糸駒台を枢支軸を軸心として水平面上を回動させると、ミシン後方に向かって開くＶ字形に配置される。
【００１４】
【発明の実施の形態】以下、本発明の実施の形態を図面を参照して説明する。本実施の形態は、６種類の刺繍糸で刺繍縫製可能な多針式ミシンに本発明を適用した場合の一例である。尚、図１に矢印で示す方向を作業者が位置する前方とし、作業者から見て左右を左右とする。
【００１５】
図１，図２に示すように、多針式ミシンＭは、多針式ミシンＭを支持する支持部１と、その支持部１から立設する脚柱部２と、脚柱部２の上端部から前方に延びるアーム部３と、左右方向に移動可能にアーム部３の先端に装着された針棒ケース４と、アーム部３の中央部の右側に設けられ図１に示す収納位置と図２に示す操作位置とに切換え可能な操作パネル５と、脚柱部２の下端部から前方に延びるシリンダベッド部６と、脚柱部２の下端部に設けられ左右方向に延びる刺繍枠移動機構７と、アーム部３の後半部の上面に設けられ複数の糸駒１１ａ〜１１ｆが装着可能な糸立装置８と、針棒ケース４の上端部から後方に延びる糸調子部９と、糸案内機構１０等を備えている。
【００１６】
針棒ケース４には、６本の針棒（図示略）が設けられ、針棒ケース４が左右に移動することで、６本の針棒のうち１本が選択され、その選択された針棒には、脚柱部２に設けられたミシンモータ（図示略）の駆動力が、アーム部３に設けられた針棒上下駆動機構（図示略）等を介して伝達されて、上糸Ｔ１〜Ｔ６の何れかが目孔に通された縫針１２と共に上下駆動され、ミシンモータにより回転駆動するシリンダベッド部６の糸輪捕捉器（図示略）との協動により、刺繍枠移動機構７に支持された刺繍枠（図示略）に装着された加工布に縫目が形成される。
【００１７】
次に、糸立装置８について説明する。糸立装置８は、縫針１２に上糸Ｔ１〜Ｔ６を供給する複数の糸駒１１ａ〜１１ｆを装着可能に構成されている。図３，図４に示すように、糸立装置８は、略矩形の板状に形成されて多針式ミシンＭのアーム部３に３本のビス１５で固定されている支持台１６と、６個の糸駒１１ａ〜１１ｆを装着可能な１対の糸駒台１７，１８と、１対の糸駒台１７，１８を支持台１６に連結可能なリンク機構２２であって１対の糸駒台１７，１８を使用位置と収納位置とに夫々固定可能なリンク機構２２と、１対の糸駒台１７，１８の一端付近部を支持台に水平面内で回動可能に連結する１対の枢支軸１９，２０と、糸駒台１７，１８に立設された６本の糸駒棒２１などを備えている。
【００１８】
糸駒台１７，１８は、図２，図４に示すように、平面視にて多針式ミシンＭの後方へ向かって開くＶ字形に配列された使用位置と、図１，図３に示すように、この使用位置から閉じて多針式ミシンＭの前後方向とほぼ平行に並べた収納位置とに切り替え可能に構成されている。糸駒台１７，１８は、共に合成樹脂製の同一構造であり、図３の収納位置において、左側の糸駒台１８は右側の糸駒台１７を水平面上で１８０度回転させて取り付けたものなので、構造については右側の糸駒台１７についてのみ説明する。
【００１９】
図３〜図６に示すように、糸駒台１７は、糸駒台本体３０と、平面視にて糸駒台本体３０の上面と同じ形状であって糸駒台本体３０の上面に載置される板部材３１と、各糸駒棒２１に対応する位置に装着される円板部材３８とを有する。糸駒台本体３０には、収納位置にて前後方向に長い略小判状の上面部３２と、その上面部３２の外周部から下方に形成された外周部３３とを有し、上面部３２には、糸駒棒２１が嵌入される３つの棒穴３４が形成されている。
【００２０】
糸駒台本体３０の一端付近部と他端付近部には、糸駒台１７，１８を同一構造の部品で構成するために、上下方向に貫通状態に形成され枢支軸１９，２０を連結するための１対の枢支軸用連結穴３５ａ，３５ｂと、下方から連結軸４６，４７が挿通されてリンク部材４０，４１の一端部を連結する１対のリンク用連結穴３６ａ，３６ｂが設けられている。
【００２１】
一端付近部に形成されているリンク用連結穴３６ａには、連結されたリンク部材４０，４１の高さを変えるためのスペーサ３７が上端部の内周側に一体形成され、リンク部材４０，４１が干渉するのを防いでいる。同じ構造の連結軸４６，４７により糸駒台１７，１８とリンク部材４０，４１とを連結するため、他端付近部に形成されたリンク用連結穴３６ｂの周壁部３６ｆの下端部から上端部までの長さと、リンク用連結穴３６ａの周壁部３６ｅの下端部からスペーサ３７の下端部までの長さが同じ長さに構成され、更に、１対のリンク用連結穴３６ａ，３６ｂの周壁部３６ｅ，３６ｆには、連結軸４６，４７を固定するピン５３，５６が挿通されるピン穴３６ｃ，３６ｄであって左右方向に連通されたピン穴３６ｃ，３６ｄがリンク用連結穴３６ａ，３６ｂの下端部から同じ高さの位置に形成されている。
【００２２】
リンク機構２２は、一端部が糸駒台１７の他端付近部に夫々連結された１対のリンク部材４０，４１と、これらリンク部材４０，４１の他端側部分に夫々形成された１対のスリット４２，４３と、これらスリット４２，４３の交差部に共通に挿通された締結軸部材４４を介して１対のリンク部材４０，４１の他端側部分を支持台１６に解除可能に締結する締結部材４５と、リンク部材４０，４１と糸駒台１７，１８とを連結する連結軸４６，４７などを有する。
【００２３】
締結部材４５は、リンク部材４０，４１のスリット４２，４３に挿通される締結軸部材４４が雄ネジに形成されており、その締結軸部材４４の下端部は支持台１６のネジ穴４８に螺合されている。締結軸部材４４の上端部には、締結軸部材４４よりやや大径の軸部４９が形成され、その軸部４９の上端部にはツマミ５０が設けられている。締結部材４５は、ツマミ５０を所定方向に回すことで、締結部材４５を下方に移動させ、軸部４９の下端部と支持台１６との間でリンク部材４０，４１を押圧して固定し、また、前記所定方向とは逆方向にツマミ５０を回すことで、締結部材４５を上方に移動させて、リンク部材４０，４１の締結固定を解除可能に構成されている。尚、軸部４９、リンク部材４０，４１、支持台１６の夫々の間には、リンク部材４０，４１を円滑に移動させるために、ワッシャ（図示略）が夫々装着されている。
【００２４】
図７に示すように、右側の糸駒台１７の糸駒台本体３０とリンク部材４０との連結は、下方から連結軸４６をリンク部材４０の連結穴５１、糸駒台本体３０のリンク用連結穴３６ｂの順に挿通し、連結軸４６の高さ方向の中央部に形成されたピン穴５２とリンク用連結穴３６ｂに形成されたピン穴３６ｄを一致させ、そのピン穴３６ｄ，５２にピン５３を挿通させて、連結軸４６を糸駒台本体３０に対しては固定し且つリンク部材４０に対しては回動可能に連結する。
【００２５】
図８に示すように、左側の糸駒台１８の糸駒台本体３０とリンク部材４１との連結も、リンク部材４１の連結穴５４、糸駒台本体３０のスペーサ３７が形成されたリンク用連結穴３６ａの順に連結軸４７を挿通し、連結軸４７のピン穴５５とリンク用連結穴３６ａのピン穴３６ｃとにピン５６を貫通させて連結している。尚、連結軸４６，４７は、同一の構造であり、ピン穴５２，５５も同じ位置に形成されている。
【００２６】
リンク部材４０，４１とリンク用連結穴３６ａ，３６ｂの周壁部３６ｅ，３６ｆとの間には振動防止のためのワッシャ５７と波座金５８が装着され、リンク部材４０，４１と連結軸４６，４７の頭部との間には、Ｅリング５９が嵌入されている。
【００２７】
図６〜図８に示すように、左側のリンク部材４１が挿通されるリンク用連結穴３６ａには、スペーサ３７が形成されているため、装着された左側のリンク部材４１は、右側のリンク部材４０よりも下方に位置することになり、糸駒台１７，１８を使用位置から収納位置に切り換える場合に、リンク部材４０，４１同士の干渉を防ぐことができる。
【００２８】
枢支軸１９は、糸駒台本体３０に形成された枢支軸用連結穴３５ａに上部から嵌入され、その枢支軸１９の下端部に設けられたネジ部６０は支持台１６を貫通し、支持台１６の下面でナット６１がネジ部６０に螺合し、糸駒台１７を支持台１６に対して回動可能に連結している。枢支軸１９の頭部と枢支軸用連結穴３５ａの段部との間には、ワッシャ６２と波座金６３が装着され、多針式ミシンＭの振動を吸収している。
【００２９】
糸駒棒２１の下端部には、フック部６５が形成され、このフック部６５を糸駒台本体３０の棒穴３４に貫通させて、支持台１６の下面でフック部６５が係合している。フック部６５の上部には、フランジ部６６が形成され、糸駒棒２１のガタツキを防いでいる。
【００３０】
次に、糸駒台１７，１８を、図１，図３に示すように、リンク機構２２が支持台１６の側方からはみ出さないように収納され糸駒台１７，１８を平行に並べた収納位置から、図２，図４に示す平面視にてＶ字形に開いた使用位置へ切換える方法について説明する。まず、収納位置に固定された糸駒台１７，１８の固定を解除するため、締結部材４５のツマミ５０を所定方向に回し、次に、固定解除された糸駒台１７，１８を枢支軸１９，２０の周りを回動させると、リンク部材４０，４１が一端部で糸駒台１７，１８を支持しつつ、リンク部材４０，４１に形成されたスリット４２，４３が締結軸部材４４にガイドされて摺動する。糸駒台１７，１８が使用位置まで切換えられたら、再度、締結部材４５により締結固定する。
【００３１】
糸案内機構１０は、１対の糸駒台１７，１８の上方に位置する１対の糸案内バー７０，７１であって、１対の糸駒台１７，１８の位置切換えに対応するように位置切換え可能な１対の糸案内バー７０，７１と、これら糸案内バー７０，７１の一端部が回動可能に連結され、３段式のテレスコピック構造で上下に伸縮可能な１対の脚柱部材７２，７３と、支持台１６にビス７４で固定され、脚柱部材７２，７３を固定する為のベース部材７５とを有する。
【００３２】
左右１対の糸案内バー７０，７１は同じ構造であるので、右側の糸案内バー７０について説明すると、糸案内バー７０は縦断面が逆Ｔ字状に形成され、糸案内バー７０の長さ方向には等間隔で上糸Ｔ１〜Ｔ３を上部から嵌入可能な３つの糸案内凹部７６ａ，７６ｂ，７６ｃ（糸案内バー７１においては７６ｄ，７６ｅ，７６ｆ）が形成されている。
【００３３】
糸案内機構１０を収納するときは、図５の仮想線で示すように脚柱部材７２，７３を収容し且つ図３に示すように各糸案内バー７０，７１が多針式ミシンＭの長さ方向に平行に並ぶように収納する。糸案内機構１０を使用するときは、図５の実線で示すように脚柱部材７２，７３を伸長し且つ図４に示すように糸案内バー７０，７１を糸駒台１７，１８のＶ字形に対応するようにＶ字形に開いて使用する。尚、糸案内バー７０，７１は、糸駒１１ａ〜１１ｆを糸駒台１７，１８に載置した状態で収納する際には、脚柱部材７２，７３を伸長させた状態か、若しくは脚柱部材７２，７３を１段だけ収納した状態のまま収納してもよい。
【００３４】
糸調子部９は、針棒ケース４の上端部から後方に延びる糸調子台８０に６個の糸調子器８１ａ〜８１ｆが、糸立装置８の糸駒台１７，１８の使用位置のＶ字形状に対応するように、後方に向かって開くＶ字形に配置されている。糸調子台８０の後端部には、糸案内バー７０，７１を経由した各上糸Ｔ１〜Ｔ６が掛けられる６個の副糸調子器８２ａ〜８２ｆが横一列に配設されている。糸調子台８０には、糸調子器８１ａ〜８１ｆに掛けられた上糸Ｔ１〜Ｔ６が掛けられて糸絡みを防止するための複数の糸案内ピン８３が立設されている。
【００３５】
糸調子器８１ａ〜８１ｆについて、図９を参照して簡単に説明する。尚、糸調子器８１ａ〜８１ｆは、同じ構成であるので、糸調子器８１ａについてのみ説明する。この糸調子器８１ａは、上下方向に亙って延びる軸部材９０と、上糸Ｔ１が一巻き巻回されたロータリー皿９１と、調節機構９２と、軸部材９０の下端部に外嵌された糸取りバネ９３と、糸調子台８０にビス９４ａで固定された本体部材９４等で構成されている。調節機構９２は、ロータリー皿９１を上方から付勢し且つその付勢力を調整することでロータリー皿９１の回転抵抗を調節するためのものであって、糸調子皿９５と、その糸調子皿９５の上端部に内嵌された調節ダイヤル９６と、調節ダイヤル９６の雄ネジ部９６ａの下端部に当接されたバネ受け部材９７を介して糸調子皿９５を下方へ付勢するコイルバネ９８等で構成されている。
【００３６】
調節ダイヤル９６は、上端部の内側に形成された雌ネジ部９６ａが軸部材９０の上端部に形成された雄ネジ部９０ａに螺合されており、調節ダイヤル９６を回転させて、軸部材９０に対して上下方向に相対移動させることで、コイルバネ９８の付勢力を調節し、ロータリー皿９１の回転抵抗力を調節することが可能に構成されている。ロータリー皿９１は、上方からは糸調子皿９５を介してコイルバネ９８により付勢され、その付勢による回転抵抗力をロータリー皿９１に巻回された上糸Ｔ１に作用させる。
【００３７】
次に上糸Ｔ１〜Ｔ６の糸掛け作業について説明する。収納位置に位置する糸駒台１７，１８に６個の糸駒１１ａ〜１１ｆを装着した作業者は、まず、糸案内機構１０の脚柱部材７２，７３を上方に伸長させ、糸案内バー７０，７１を後方に向かって開くＶ字形に位置切換えし、次に、糸駒１１ａ〜１１ｆが装着された糸駒台１７，１８も後方に向かって開くＶ字形の使用位置に位置切換えする。次に、各糸駒１１ａ〜１１ｆから上糸Ｔ１〜Ｔ６を上方に引き出し、夫々を対応する糸案内バー７０，７１の糸案内凹部７６ａ〜７６ｆに後方の上方から嵌入し、次に、夫々に対応する副糸調子器８２ａ〜８２ｆに掛け、次に、夫々に対応する糸調子器８１ａ〜８１ｆに一巻き巻回し、次に、糸案内ピン８３に掛け、その後、天秤８４などを経由させて縫針１２の目孔に糸通しする。
【００３８】
例えば、図２，図４に示すように、糸駒１１ｃの上糸Ｔ３を作業者が糸掛けする場合には、まず、上方に上糸Ｔ３を引き出して糸案内バー７０の糸案内凹部７６ｃに嵌入し、その上糸Ｔ３を副糸調子器８２ｃに掛けて、次に、糸調子器８１ｃに一巻き巻回し、次に、その糸調子器８１ｃの前方に位置する糸案内ピン８３に掛けた後、天秤８４などを経由させて縫針１２の目孔に糸通しする。尚、この糸掛け作業の作業手順は一例であり、適宜変更可能である。
【００３９】
以上説明した実施の形態の作用及び効果を説明する。６個の糸調子器８１ａ〜８１ｆと使用位置にある糸駒台１７，１８に装着された糸駒１１ａ〜１１ｆが、共に後方に向かって開くＶ字形に配置されているため、糸調子器８１ａ〜８１ｆと糸駒１１ａ〜１１ｆの対応が容易に理解でき、作業者は糸駒１１ａ〜１１ｆから引き出した上糸Ｔ１〜Ｔ６の糸掛けを容易に行うことができる。糸駒台１７，１８は使用位置においても、Ｖ字形に配置されているため、多針式ミシンＭの横幅を小さくしつつ、上糸Ｔ１〜Ｔ６の糸絡みを防止し、糸切れを防いでいる。
【００４０】
糸駒台１７，１８は、図２，図４に示すようにＶ字形に配置された使用位置から、図１，図３に示すように糸駒台１７，１８が互いに平行に並べた収納位置に切換え可能なため、多針式ミシンＭを、更に、コンパクトにすることができる。糸駒台１７，１８を収納位置から使用位置に位置切換えすると、後方にある糸駒１１ｃ，１１ｆなどが作業者側に接近することになるので、作業者は糸駒１１ｃ，１１ｆの上糸Ｔ３，Ｔ６などの糸掛け作業を簡単化することができる。糸案内機構１０の糸案内バー７０，７１は、糸調子器８１ａ〜８１ｆ及び使用位置の糸駒１１ａ〜１１ｆが配置されているように後方に向かって開くＶ字形に切換え可能に構成されているため、上糸Ｔ１〜Ｔ６の糸掛け作業を、更に、簡単化することができ、同時に、糸絡みを防ぐことができる。
【００４１】
以上説明した実施の形態を部分的に変更した変更の形態について説明する。
【００４２】
１）上記実施の形態において、糸駒台１７，１８は、使用位置と収納位置に切替え可能に構成されているが、糸駒台を常にＶ字形に固定してもよい。
【００４３】
２）上記実施の形態において、糸案内機構１０は、糸案内バー７０，７１が回動可能に且つ脚柱部材７２，７３が伸縮自在に構成されていたが、糸案内バーをＶ字形に固定若しくは脚柱部材を伸縮不能に構成してもよい。
【００４４】
３）糸駒１１ａ〜１１ｆは、芯を有するものでも、芯がないものでもよく、特に限定されるものではない。
【００４５】
４）使用位置にある糸駒台は、後方に向かって開くＶ字形のみならず、前方に向かって開くＶ字形に配置してもよい。このように構成する場合には、糸調子器も同様に、前方に向かって開くＶ字形に配置する。
【００４６】
本発明は以上説明した実施の形態に限定されるものではなく、当業者であれば、本発明の趣旨を逸脱しない範囲で、前記実施の形態に種々の変更を付加して実施することができ、本発明は、それらの変更形態をも包含するものである。
【００４７】
【発明の効果】請求項１に記載のミシンによれば、夫々の糸調子器と夫々の糸駒台に装着された糸駒との対応が容易に理解できるため、作業者は糸駒から引き出した上糸の糸掛けを容易に行うことができる。糸駒台及び糸調子器がＶ字形に配置されているため、ミシンの横幅を小さくしつつ、上糸同士の糸絡みを防止し、糸切れを防いでいる。
【００４８】
請求項２に記載のミシンによれば、１対の糸駒台がＶ字形に開いた使用位置から平行に並べた収納位置に切替え可能なため、更に、ミシンをコンパクトにすることができる。その他、請求項１と同様の効果を奏することができる。
【００４９】
請求項３に記載のミシンによれば、糸案内バーがＶ字形の糸駒台と対応するように上方に位置するので、作業者が糸案内バーに容易に糸掛けでき、上糸同士の糸絡みを防止することができる。１対の糸案内バーは、脚柱部材の周りを回動させて、脚柱部材を短縮することでコンパクトに収納することができる。その他、請求項２と同様の効果を奏することができる。
【００５０】
請求項４に記載のミシンによれば、収納位置に位置するときに後方にある糸駒が、糸駒台の回動により前方に移動するため、作業者は糸駒から上糸を容易に引き出すことができる。その他、請求項２又は３と同様の効果を奏することができる。
【図面の簡単な説明】
【図１】本実施の形態に係る多針式ミシンの全体図である。
【図２】糸立装置が使用位置にあるときの多針式ミシンの全体図である。
【図３】糸立装置が収納位置にあるときの平面図である。
【図４】糸立装置が使用位置にあるときの平面図である。
【図５】刺繍ミシンの右側面図である。
【図６】図３のＶＩ−ＶＩ線の一部拡大断面図である。
【図７】図６の一部拡大概略図である。
【図８】左方側面視の図６相当図である。
【図９】糸調子器の部分断面図である。
【符号の説明】
Ｍ多針式ミシン
８糸立装置
１０糸案内機構
１１ａ〜１１ｆ糸駒
１６支持台
１７，１８糸駒台
１９，２０枢支軸
２２リンク機構
７０，７１糸案内バー
７２，７３脚柱部材
８１ａ〜８１ｆ糸調子器[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine, and more particularly to a sewing machine provided with a thread stand on which a plurality of thread spools can be mounted and a plurality of thread tensioners.
[0002]
2. Description of the Related Art Conventionally, a multi-needle sewing machine used for sewing with a plurality of kinds of threads generally has a needle bar case having a plurality of sewing needles, and the needle bar case is moved in the left-right direction to form one sewing needle. Is selected and the embroidery pattern is sewn with the sewing needle. A plurality of needles having different colors and thicknesses are supplied to a plurality of sewing needles, and a plurality of thread spools for supplying the upper thread are mounted on a thread spool base or the like, and passed through a thread guide, a thread tension controller, a balance, and the like. Then, the upper thread is passed through the eye of the sewing needle.
[0003]
For example, in Patent Document 1, a horizontal plate fixed to a movable frame rotatably supported by a fixed underframe, and a support fixed at the center of the horizontal plate so as to be orthogonal to the horizontal plate. A thread stand having a plate is disclosed. A total of four thread spools, two each, are mounted on the support plate and the horizontal plate fixed in a cross shape, and the four upper threads supplied from the four thread spools are at the upper end of the movable frame. It is guided to the thread guide hole of the cross-shaped thread guide plate corresponding to the cross shape provided in the section and supplied to the sewing needle.
[0004]
Patent Literature 2 discloses a thread stand device of a multi-sewing machine including a plurality of elongated thread placement members on which six or five thread spools can be placed. The upper thread supplied from each of the thread spools is passed through an insertion hole of a thread stand shaft that supports each thread spool, extends along the length direction of the thread placement member, and is supplied to the sewing needle.
[0005]
[Patent Document 1] Japanese Utility Model Publication No. Sho 55-30920 (all pages, all drawings)
[Patent Document 2] Japanese Utility Model Publication No. 59-70681 (pages 3 to 6, FIGS. 1 and 2)
[0006]
In a general sewing machine, the upper thread is hung on a thread tensioner. In the sewing machine of Patent Document 1, a thread stand is provided to make it easier to understand the correspondence between the thread spool and the thread tensioner. When the thread tensioner is arranged in a cross shape so as to correspond to the above, two of the two cross-shaped sides are hung on two thread tensioners arranged on one side parallel to the direction in which the upper thread extends. The upper thread of the book is entangled with each other, causing problems such as thread breakage. In order to prevent thread entanglement, for example, if the thread tensioner is arranged in the horizontal direction so as to be orthogonal to the direction in which the yarn extends, it is difficult to understand the correspondence between each thread spool and each thread tensioner, and the operator has to adjust the thread tensioner. When the thread tensioner is arranged in the horizontal direction, the width of the sewing machine is increased.
[0007]
In the multi-sewing machine disclosed in Patent Literature 2, since the direction in which the yarn extends and the direction in which the yarn spools are arranged are parallel to each other, the upper yarns extending from the yarn spool are easily entangled with each other, and yarn breakage easily occurs. In order to prevent the upper thread from becoming entangled with each other, if the thread tensioner is arranged so as to be substantially perpendicular to the direction in which the upper thread extends, it is difficult to understand the correspondence between each thread spool and each thread tensioner. The problem that it becomes large arises.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a sewing machine in which a plurality of thread spools can be mounted, in which the correspondence between each thread spool and each thread tensioner can be easily understood.
[0009]
According to a first aspect of the present invention, there is provided a sewing machine provided with a plurality of thread spools and a plurality of thread tensioners. A thread spool on which a thread spool is mounted, the thread spool being arranged in a V-shape that opens toward the front or rear of the sewing machine in plan view, and the plurality of thread tensioners are They are arranged in a V-shape that opens in the same direction as the arrangement.
[0010]
According to this sewing machine, the operator pulls out the upper thread from each of the thread spools mounted on the thread spools arranged in a V-shape, and arranges the plurality of threads arranged in a V-shape that opens in the same direction as the thread spools. The upper thread is hung on the thread tensioner of, the upper thread is passed through the eye of the sewing needle, and the upper thread is supplied to the sewing needle.
[0011]
According to a second aspect of the present invention, in the sewing machine according to the first aspect, the thread stand device includes a support, a pair of thread spools, and a link capable of connecting the pair of thread spools to the support. A use mechanism comprising a mechanism and a pivot shaft for connecting the vicinity of one end of the pair of spool bases to a support base so as to be rotatable in a horizontal plane, wherein the pair of spool bases are opened in a V-shape in plan view. And a storage position that can be switched from the use position to a storage position that is closed and arranged substantially parallel to the use position. According to this sewing machine, a pair of thread spool bases on which a plurality of thread spools can be mounted is rotated around a pivot shaft on a horizontal plane, and a use position opened in a V-shape in plan view. Closes from the use position and switches to the storage position arranged almost in parallel.
[0012]
According to a third aspect of the present invention, in the sewing machine according to the second aspect, the pair of thread guide bars are located above the pair of thread spool bases, and correspond to position switching of the pair of thread spool bases. In this manner, a thread guide mechanism having a pair of thread guide bars whose positions can be switched as described above, and a vertically extendable pillar member to which one end of each thread guide bar is rotatably connected is provided. According to this sewing machine, the operator pulls the upper thread pulled out from the thread spool into a pair of thread guide bars located above the thread spool in a V-shape corresponding to the thread spool located in the V-shaped use position. After hanging, hang the upper thread on the thread tensioner.
[0013]
A sewing machine according to a fourth aspect of the present invention is the sewing machine according to the second or third aspect, wherein the V-shape when the pair of thread spool bases is in the use position is a V-shape that opens rearward of the sewing machine. According to this sewing machine, when the thread spool base located at the storage position is rotated on a horizontal plane with the pivot shaft as an axis, it is arranged in a V-shape that opens toward the rear of the sewing machine.
[0014]
Embodiments of the present invention will be described below with reference to the drawings. This embodiment is an example in which the present invention is applied to a multi-needle sewing machine that can sew embroidery with six types of embroidery threads. Note that the direction indicated by the arrow in FIG. 1 is the front where the worker is located, and the left and right are the left and right as viewed from the worker.
[0015]
As shown in FIGS. 1 and 2, the multi-needle sewing machine M includes a support portion 1 that supports the multi-needle sewing machine M, a pillar 2 erected from the support 1, and an upper end of the pillar 2. Arm portion 3 extending forward from the arm portion, a needle bar case 4 attached to the tip of the arm portion 3 so as to be movable in the left-right direction, and a storage position and a view provided on the right side of the central portion of the arm portion 3 as shown in FIG. 2, a cylinder bed 6 extending forward from the lower end of the pillar 2, and an embroidery frame moving mechanism provided at the lower end of the pillar 2 and extending in the left-right direction. 7, a thread stand 8 provided on the upper surface of the rear half of the arm 3 to which a plurality of thread spools 11a to 11f can be mounted, a thread tension portion 9 extending rearward from the upper end of the needle bar case 4, and a thread guide. A mechanism 10 and the like are provided.
[0016]
The needle bar case 4 is provided with six needle bars (not shown), and by moving the needle bar case 4 left and right, one of the six needle bars is selected, and the selected needle is selected. The driving force of a sewing machine motor (not shown) provided on the pillar 2 is transmitted to the rod via a needle bar vertical drive mechanism (not shown) provided on the arm 3 and the like, and the upper thread T1 To T6 is driven up and down together with the sewing needle 12 passed through the eye hole, and cooperates with a thread wheel catcher (not shown) of the cylinder bed 6 which is rotationally driven by a sewing machine motor. Stitches are formed on the work cloth mounted on the supported embroidery frame (not shown).
[0017]
Next, the yarn standing device 8 will be described. The thread stand 8 is configured so that a plurality of thread spools 11a to 11f that supply the upper threads T1 to T6 to the sewing needle 12 can be mounted. As shown in FIGS. 3 and 4, the thread stand 8 includes a support base 16 formed in a substantially rectangular plate shape and fixed to the arm 3 of the multi-needle sewing machine M with three screws 15. A pair of thread spool bases 17 and 18 to which six thread spools 11a to 11f can be mounted, and a link mechanism 22 capable of connecting the pair of thread spool bases 17 and 18 to the support base 16; A link mechanism 22 that can fix the frame stands 17 and 18 to the use position and the storage position, respectively, and a pair that couples the vicinity of one end of the pair of thread frames 17 and 18 to the support so as to be rotatable in a horizontal plane. , And six thread spool rods 21 erected on thread spool stands 17, 18.
[0018]
As shown in FIGS. 2 and 4, the thread spool bases 17 and 18 are used in a V-shape that opens rearward of the multi-needle sewing machine M in plan view, and shown in FIGS. Thus, the multi-needle sewing machine M is configured to be able to be closed from this use position and switched to the storage position arranged substantially in parallel with the front-rear direction of the multi-needle sewing machine M. The thread spool bases 17 and 18 have the same structure made of synthetic resin, and the left thread spool base 18 is attached by rotating the right thread spool base 180 by 180 degrees on a horizontal plane in the storage position of FIG. Therefore, only the structure of the thread stand 17 on the right side will be described.
[0019]
As shown in FIGS. 3 to 6, the thread spool base 17 has the same shape as the top of the thread spool base body 30 in plan view and is mounted on the upper surface of the thread spool base body 30. And a disk member 38 mounted at a position corresponding to each thread rod 21. The thread spool base body 30 has a substantially oval upper surface portion 32 that is long in the front-rear direction at the storage position and an outer peripheral portion 33 formed below the outer peripheral portion of the upper surface portion 32. Has three rod holes 34 into which the thread rods 21 are fitted.
[0020]
The pivot shafts 19 and 20 are connected to the vicinity of one end and the vicinity of the other end of the main body 30 so as to be vertically penetrated in order to constitute the main parts 17 and 18 of the same structure. And a pair of link connecting holes 36a and 36b through which the connecting shafts 46 and 47 are inserted from below to connect one end of the link members 40 and 41, respectively. Is provided.
[0021]
A spacer 37 for changing the height of the linked link members 40 and 41 is integrally formed on the inner peripheral side of the upper end portion of the link connecting hole 36a formed near the one end, and the link members 40 and 41 are integrally formed. To prevent interference. In order to connect the thread spools 17 and 18 and the link members 40 and 41 by the connecting shafts 46 and 47 having the same structure, the lower end to the upper end of the peripheral wall portion 36f of the link connecting hole 36b formed near the other end. And the length from the lower end of the peripheral wall portion 36e of the link connection hole 36a to the lower end of the spacer 37 is the same length. Further, the peripheral wall portions of the pair of link connection holes 36a and 36b are formed. The pin holes 36c and 36d through which the pins 53 and 56 for fixing the connecting shafts 46 and 47 are inserted, and the pin holes 36c and 36d that are communicated in the left-right direction are provided in the link connecting holes 36a and 36b. They are formed at the same height from the lower end.
[0022]
The link mechanism 22 includes a pair of link members 40 and 41 each having one end connected to the vicinity of the other end of the thread spool base 17, and a pair of link members 40 and 41 formed at the other end of the link members 40 and 41, respectively. The other ends of the pair of link members 40 and 41 are releasably fastened to the support base 16 through the slits 42 and 43 and the fastening shaft member 44 commonly inserted at the intersection of the slits 42 and 43. And the connecting shafts 46 and 47 for connecting the link members 40 and 41 and the thread spool bases 17 and 18.
[0023]
The fastening member 45 has a fastening shaft member 44 which is inserted into the slits 42 and 43 of the link members 40 and 41 and is formed as a male screw. The lower end of the fastening shaft member 44 is screwed into a screw hole 48 of the support base 16. Have been combined. A shaft portion 49 having a slightly larger diameter than the fastening shaft member 44 is formed at an upper end portion of the fastening shaft member 44, and a knob 50 is provided at an upper end portion of the shaft portion 49. By turning the knob 50 in a predetermined direction, the fastening member 45 moves the fastening member 45 downward, and presses and fixes the link members 40 and 41 between the lower end of the shaft 49 and the support base 16. Further, by turning the knob 50 in a direction opposite to the predetermined direction, the fastening member 45 is moved upward, so that the fastening and fixing of the link members 40 and 41 can be released. A washer (not shown) is provided between the shaft portion 49, the link members 40 and 41, and the support base 16 in order to smoothly move the link members 40 and 41.
[0024]
As shown in FIG. 7, the connection between the thread spool base main body 30 of the right thread spool base 17 and the link member 40 is performed by connecting the connection shaft 46 from below to the connection hole 51 of the link member 40 and the link of the thread spool base main body 30. The pin holes 52 formed in the center of the connection shaft 46 in the height direction are aligned with the pin holes 36d formed in the link connection holes 36b in the order of the connection holes 36b. The connection shaft 46 is fixed to the thread spool base main body 30 and rotatably connected to the link member 40 by passing the insertion shaft 53.
[0025]
As shown in FIG. 8, the connection between the thread spool base main body 30 of the left thread spool base 18 and the link member 41 is also performed for the link in which the connection hole 54 of the link member 41 and the spacer 37 of the thread spool base main body 30 are formed. The connecting shaft 47 is inserted in the order of the connecting hole 36a, and the pin 56 is connected to the pin hole 55 of the connecting shaft 47 and the pin hole 36c of the link connecting hole 36a. The connecting shafts 46 and 47 have the same structure, and the pin holes 52 and 55 are formed at the same positions.
[0026]
A washer 57 and a wave washer 58 for preventing vibration are mounted between the link members 40, 41 and the peripheral wall portions 36e, 36f of the link connection holes 36a, 36b, and the link members 40, 41 and the connection shafts 46, 47. An E-ring 59 is fitted between the head and the head.
[0027]
As shown in FIGS. 6 to 8, since the spacer 37 is formed in the link connecting hole 36 a through which the left link member 41 is inserted, the mounted left link member 41 is attached to the right link member. Since it is located lower than 40, when the thread spool bases 17 and 18 are switched from the use position to the storage position, interference between the link members 40 and 41 can be prevented.
[0028]
The pivot shaft 19 is fitted from above into a pivot shaft connection hole 35 a formed in the thread spool base main body 30, and a screw portion 60 provided at the lower end of the pivot shaft 19 passes through the support base 16. A nut 61 is screwed into the screw portion 60 on the lower surface of the support base 16, and the thread spool base 17 is rotatably connected to the support base 16. A washer 62 and a wave washer 63 are mounted between the head of the pivot shaft 19 and the step portion of the pivot shaft connection hole 35a to absorb the vibration of the multi-needle sewing machine M.
[0029]
A hook portion 65 is formed at the lower end portion of the thread spool bar 21, and the hook portion 65 is inserted through the rod hole 34 of the thread spool base body 30, and the hook portion 65 is engaged with the lower surface of the support base 16. I have. A flange portion 66 is formed at an upper portion of the hook portion 65 to prevent rattling of the thread spool bar 21.
[0030]
Next, as shown in FIGS. 1 and 3, the spool bases 17, 18 are housed so that the link mechanism 22 does not protrude from the side of the support base 16, and the spool bases 17, 18 are arranged in parallel. A method of switching from the storage position to the use position opened in a V-shape in plan view shown in FIGS. 2 and 4 will be described. First, the knob 50 of the fastening member 45 is turned in a predetermined direction in order to release the fixing of the thread spool bases 17 and 18 fixed to the storage position. When the link members 40 and 41 are rotated around the link members 19 and 20, the slits 42 and 43 formed in the link members 40 and 41 are connected to the fastening shaft member 44 while the link members 40 and 41 support the thread spool bases 17 and 18 at one end. Guided sliding. When the thread spool bases 17 and 18 have been switched to the use position, they are fastened and fixed again by the fastening members 45.
[0031]
The thread guide mechanism 10 is a pair of thread guide bars 70 and 71 located above the pair of thread spool bases 17 and 18 so as to correspond to the position switching of the pair of thread spool bases 17 and 18. A pair of thread guide bars 70, 71 whose positions can be switched, and one end of each of the thread guide bars 70, 71 are rotatably connected, and a pair of pillars that can be vertically extended and contracted by a three-stage telescopic structure. It has members 72, 73 and a base member 75 fixed to the support base 16 with screws 74 for fixing the pillar members 72, 73.
[0032]
Since the pair of left and right thread guide bars 70 and 71 have the same structure, the right thread guide bar 70 will be described. The thread guide bar 70 is formed in an inverted T-shape in longitudinal section. Three thread guide recesses 76a, 76b, 76c (76d, 76e, 76f in the thread guide bar 71) into which the upper threads T1 to T3 can be fitted from above are formed at equal intervals in the direction.
[0033]
When the thread guide mechanism 10 is housed, the pillar members 72, 73 are housed as shown by phantom lines in FIG. 5, and the thread guide bars 70, 71 are long as shown in FIG. To be arranged in parallel in the vertical direction. When the thread guide mechanism 10 is used, the pillar members 72, 73 are extended as shown by the solid lines in FIG. 5, and the thread guide bars 70, 71 are connected to the V-shapes of the thread spool bases 17, 18 as shown in FIG. Open and use in a V-shape so as to correspond to. When the thread guide bars 70, 71 are stored in a state where the thread spools 11a to 11f are mounted on the thread spool bases 17, 18, the threaded pillar members 72, 73 are extended, The members 72 and 73 may be stored in a state where only one stage is stored.
[0034]
The thread tension portion 9 is configured such that six thread tension devices 81 a to 81 f are attached to a thread tension table 80 extending rearward from an upper end portion of the needle bar case 4, and a V-shape at a use position of the thread spool tables 17 and 18 of the thread stand device 8. It is arranged in a V-shape that opens rearward so as to correspond to the shape. At the rear end of the thread tension stand 80, six auxiliary thread tensioners 82a to 82f on which the upper threads T1 to T6 are passed via the thread guide bars 70 and 71 are arranged in a row. The thread tension table 80 is provided with a plurality of thread guide pins 83 for hanging the upper threads T1 to T6 hooked on the thread tension devices 81a to 81f to prevent the thread from becoming entangled.
[0035]
The thread tensioners 81a to 81f will be briefly described with reference to FIG. Since the thread tension devices 81a to 81f have the same configuration, only the thread tension device 81a will be described. The thread tensioner 81a is fitted around a shaft member 90 extending in the vertical direction, a rotary plate 91 around which the upper thread T1 is wound once, an adjusting mechanism 92, and a lower end of the shaft member 90. It is composed of a thread take-up spring 93, a main body member 94 fixed to the thread tension table 80 with screws 94a, and the like. The adjusting mechanism 92 urges the rotary plate 91 from above and adjusts the urging force thereof to adjust the rotational resistance of the rotary plate 91. The thread tension plate 95 and the thread tension plate 95 An adjusting dial 96 fitted inside the upper end of the adjusting dial 96 and a coil spring 98 for urging the thread tension tray 95 downward through a spring receiving member 97 abutting on the lower end of the male screw portion 96a of the adjusting dial 96. It is configured.
[0036]
The adjusting dial 96 has a female screw portion 96a formed inside the upper end portion screwed to a male screw portion 90a formed at the upper end portion of the shaft member 90. By rotating the adjusting dial 96, the shaft member 90 is rotated. , The urging force of the coil spring 98 can be adjusted, and the rotation resistance of the rotary plate 91 can be adjusted. The rotary plate 91 is urged from above by a coil spring 98 via a thread tension plate 95, and applies a rotational resistance force to the upper thread T <b> 1 wound on the rotary plate 91.
[0037]
Next, the thread hooking operation of the upper threads T1 to T6 will be described. The worker who has mounted the six thread spools 11a to 11f on the thread spool bases 17 and 18 located at the storage position, first extends the pillar members 72 and 73 of the thread guide mechanism 10 upward, and , 71 are switched to the V-shape that opens rearward, and then the thread spool bases 17, 18 on which the thread spools 11a to 11f are mounted are also switched to the V-shaped use position that opens rearward. Next, the upper threads T1 to T6 are pulled out from the respective thread spools 11a to 11f upward, and are respectively fitted into the thread guide recesses 76a to 76f of the corresponding thread guide bars 70 and 71 from the upper rear, and then, respectively. The thread is wound on the corresponding thread tensioners 82a to 82f, then wound one turn around the corresponding thread tensioners 81a to 81f, and then wound on the thread guide pins 83, and then passed through a balance 84 or the like. Thread the eye of the sewing needle 12.
[0038]
For example, as shown in FIGS. 2 and 4, when an operator hooks the upper thread T3 of the thread spool 11c, first, the upper thread T3 is pulled out upward and inserted into the thread guide recess 76c of the thread guide bar 70. The upper thread T3 was hooked on the auxiliary thread tensioner 82c, wound around the thread tensioner 81c by one turn, and then wound on the thread guide pin 83 located in front of the thread tensioner 81c. Thereafter, the thread is passed through the eye of the sewing needle 12 via the balance 84 or the like. The operation procedure of the thread hooking operation is an example, and can be changed as appropriate.
[0039]
The operation and effect of the embodiment described above will be described. Since the six thread tensioners 81a to 81f and the thread spools 11a to 11f mounted on the thread spool stands 17 and 18 in the use position are both arranged in a V-shape that opens rearward, the thread tensioner 81a -81f and the thread spools 11a to 11f can be easily understood, and the operator can easily hook the upper threads T1 to T6 drawn from the thread spools 11a to 11f. Since the thread spool bases 17 and 18 are also arranged in a V-shape even in the use position, the thread width of the multi-needle sewing machine M is reduced, the thread thread of the upper thread T1 to T6 is prevented, and the thread breakage is prevented. I have.
[0040]
As shown in FIGS. 1 and 3, the spool bases 17 and 18 are moved from the use position arranged in a V-shape to the storage position where the spool bases 17 and 18 are arranged in parallel to each other as shown in FIGS. , The multi-needle sewing machine M can be made more compact. When the position of the thread spool bases 17 and 18 is switched from the storage position to the use position, the thread spools 11c and 11f at the rear come closer to the operator side, and the operator can adjust the upper thread T3 of the thread spools 11c and 11f. , T6 etc. can be simplified. The thread guide bars 70, 71 of the thread guide mechanism 10 are configured to be switchable to a V-shape that opens rearward so that the thread tensioners 81a to 81f and the thread spools 11a to 11f in use positions are arranged. Therefore, the yarn hooking operation of the upper yarns T1 to T6 can be further simplified, and at the same time, the yarn entanglement can be prevented.
[0041]
A description will be given of a modification in which the embodiment described above is partially modified.
[0042]
1) In the above embodiment, the thread spool bases 17 and 18 are configured to be switchable between the use position and the storage position. However, the thread spool bases may always be fixed in a V-shape.
[0043]
2) In the above embodiment, the yarn guide mechanism 10 is configured such that the yarn guide bars 70 and 71 are rotatable and the pillar members 72 and 73 are extendable, but the yarn guide bar is fixed in a V-shape. Alternatively, the pillar members may be configured to be inextensible.
[0044]
3) The thread spools 11a to 11f may have a core or no core, and are not particularly limited.
[0045]
4) The thread stand in the use position may be arranged not only in a V-shape that opens rearward but also in a V-shape that opens forward. In such a configuration, the thread tensioner is also arranged in a V-shape that opens forward.
[0046]
The present invention is not limited to the embodiment described above, and those skilled in the art can add various changes to the embodiment without departing from the scope of the present invention. The present invention also includes those modifications.
[0047]
According to the sewing machine of the first aspect, since the correspondence between each thread tensioner and each thread spool mounted on each thread spool base can be easily understood, the operator pulls out the thread spool from the thread spool. The upper thread can be easily hooked. Since the thread spool base and the thread tensioner are arranged in a V-shape, the width of the sewing machine is reduced, and the upper thread is prevented from becoming entangled with the thread, thereby preventing thread breakage.
[0048]
According to the second aspect of the present invention, the pair of thread spools can be switched from the use position opened in a V-shape to the storage position arranged in parallel, so that the sewing machine can be made more compact. In addition, the same effects as those of the first aspect can be obtained.
[0049]
According to the sewing machine of the third aspect, since the thread guide bar is located above the V-shaped thread stand, the operator can easily hook the thread on the thread guide bar, and the thread between the upper threads can be formed. Entanglement can be prevented. The pair of thread guide bars can be stored compactly by rotating around the pillar member and shortening the pillar member. In addition, the same effects as those of the second aspect can be obtained.
[0050]
According to the sewing machine of the fourth aspect, when located at the storage position, the rear thread spool is moved forward by the rotation of the thread spool base, so that the operator can easily pull out the upper thread from the thread spool. be able to. In addition, the same effect as the second or third aspect can be obtained.
[Brief description of the drawings]
FIG. 1 is an overall view of a multi-needle sewing machine according to the present embodiment.
FIG. 2 is an overall view of the multi-needle sewing machine when the thread stand device is at a use position.
FIG. 3 is a plan view when the thread stand device is at a storage position.
FIG. 4 is a plan view when the thread stand device is at a use position.
FIG. 5 is a right side view of the embroidery sewing machine.
FIG. 6 is a partially enlarged cross-sectional view taken along the line VI-VI of FIG. 3;
FIG. 7 is a partially enlarged schematic view of FIG. 6;
FIG. 8 is a diagram corresponding to FIG. 6 when viewed from the left side.
FIG. 9 is a partial sectional view of the thread tensioner.
[Explanation of symbols]
M Multi-needle sewing machine 8 Thread stand 10 Thread guide mechanisms 11a to 11f Thread spool 16 Support stands 17, 18 Thread linkage 19, 20 Pivot shaft 22 Link mechanisms 70, 71 Thread guide bars 72, 73 Pillar members 81a to 81f thread tensioner

Claims

In a thread stand that can mount a plurality of thread spools and a sewing machine that includes a plurality of thread tensioners,
The thread stand has a thread stand on which a plurality of thread spools are mounted,
The thread spool base is arranged in a V-shape that opens toward the front or rear of the sewing machine in plan view,
The sewing machine according to claim 1, wherein the plurality of thread tensioners are arranged in a V shape that opens in the same direction as the arrangement of the thread spool base.

The thread stand includes a support base, a pair of thread bases, a link mechanism capable of connecting the pair of thread bases to the support base, and a horizontal surface on one end near one end of the pair of thread bases. A pivot shaft connected rotatably within the
2. The device according to claim 1, wherein the pair of thread spool bases are configured to be switchable between a use position where the pair of thread stands are opened in a V-shape in plan view and a storage position where the use position is closed and arranged substantially in parallel. Sewing machine.

A pair of thread guide bars located above the pair of thread spools, the pair of thread guide bars being switchable in position so as to correspond to the position switching of the pair of thread spools; 3. The sewing machine according to claim 2, further comprising a thread guide mechanism having a vertically extensible pillar member to which one end of the guide bar is rotatably connected.

The sewing machine according to claim 2, wherein the V-shape when the pair of thread spool bases is at the use position is a V-shape that opens rearward of the sewing machine.